CY7C129 Datasheet, PDF (1/8 Pages) Cypress Semiconductor – RAM9 QDR-I/DDR-I/QDR-II/DDR- II Errata

CY7C129*DV18/CY7C130*DV25
CY7C130*BV18/CY7C130*BV25/CY7C132*BV25
CY7C131*BV18 / CY7C132*BV18/CY7C139*BV18
CY7C191*BV18/CY7C141*AV18 / CY7C142*AV18/
CY7C151*V18 /CY7C152*V18
May 02, 2007
RAM9 QDR-I/DDR-I/QDR-II/DDR- II Errata
Errata Revision: *C
This document describes the DOFF issue for QDRII/DDRII and the Output Buffer and JTAG issues for
QDRI/DDRI/QDRII/DDRII. Details include trigger conditions, possible workarounds and silicon revision applicability.
This document should be used to compare to the respective datasheet for the devices to fully describe the device
functionality.
Please contact your local Cypress Sales Representative for availability of the fixed devices and any other questions.
Devices Affected
Density & Revision
9Mb - Ram9(90 nm)
9Mb - Ram9(90 nm)
18Mb - Ram9(90nm)
18Mb - Ram9(90nm)
36Mb - Ram9(90nm)
72Mb -Ram9(90nm)
Part Numbers
CY7C130*DV25
CY7C129*DV18
CY7C130*BV18
CY7C130*BV25
CY7C132*BV25
CY7C131*BV18
CY7C132*BV18
CY7C139*BV18
CY7C191*BV18
CY7C141*AV18
CY7C142*AV18
CY7C151*V18
CY7C152*V18
Architecture
QDRI/DDRI
QDRII
QDRI/DDRI
QDRII/DDRII
QDRII/DDRII
QDRII/DDRII
Table 1. List of Affected devices
Product Status
All of the above densities and revisions are available in sample as well as production quantities.
QDR/DDR DOFF Pin, Output Buffer and JTAG Issues Errata Summary
The following table defines the issues and the fix status for the different devices which are affected.
Item
1.
Issue
DOFF pin is used for enabling/dis-
abling the DLL circuitry within the
SRAM. To enable the DLL circuitry,
DOFF pin must be externally tied
HIGH. The QDR-II/DDR-II devices
have an internal pull down resistor of
~5K Ω . The value of the external pull-
up resistor should be 500 Ω or less in
order to ensure DLL is enabled.
Device
9Mb - “D” Rev - Ram9
18Mb - “B” Rev - Ram9
36Mb - “A” Rev - Ram9
72Mb - Ram9
QDR-II/DDR-II Devices
Fix Status
The fix involved removing the in-
ternal pull-down resistor on the
DOFF pin. The fix has been im-
plemented on the new revision
and is now available.
Cypress Semiconductor Corporation • 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600
Document #: 001-06217 Rev. *C
Revised:- May 02, 2007